Matthews is sixth overall, 23 seconds behind race-leader Stefan Kung, and is preparing to defend his green jersey at next month's Tour de France - although his main goals will be stage wins and helping Team Sunweb teammate Tom Dumoulin try to win the Tour rather than trying to finish in Paris in green again.

Katusha Alpecin rider Haas' hopes at the Amstel Gold Race in April had been ruined by a mystery illness and he only returned to racing halfway through May.